Closet-tank.



FRANK H. LINDENBERG, OF COLUMBUS, OHIO.

CLOSET-TANK.

Specification of Letters Patent.

Patented Nov. 12, 1907.

Application filed January 22, 1906. Serial No. 297.154.

To all whom it may concern:

Be it known that I, FRANK I-I. LINDENBERG, a citizen of the UnitedStates, residing at Columbus, in the county of Franklin and State ofOhio, have invented certain newand useful Improvements in Closet-Tanks,

' prising a Wooden skeleton frame having an outer shell of metal, and aninner lining or receptacle of metal. By this construction the warpingand swelling of wooden tanks which disarranges the fittings is avoidedand the sweating ofan all metal tank overcome; also air spaces betweenthe metal shell and the inner lining are provided. This provides deadair spaces which greatly aids in maintaining the tank in a normal stateunder varying conditions.

Finally the object of the invention is to provide a tank of thecharacter described that will be strong, durable and efficient and inwhich the several parts are not liable to get out of working order.

With the above and other objects in view, the invention consists of thenovel details of construction and operation, a preferable embodiment ofwhich is described in the specification and illustrated in theaccompanying drawings, wherein-- Figure 1 is a front elevation of theskeleton frame, Fig. 2 is an end elevation of the frame, Fig. 3 is arear elevation of the frame, Fig. 4 is a plan view of the tank,

and, Fig. 5 is a transverse vertical sectional view of the tank taken onthe line rt .l, of Fig. 4.

In the drawings the numeral 1 designates a skeleton frame, preferablyformed of wood and having a shape substantially the same as the finishedtank. This frame comprises vertical corner posts 2, right angular androunded in cross-section, so as to produce in the finished tank, roundedcorners. The corner posts are connected to vertical rear posts 3 byhorizontal bars 4 of which three at each end of the frame, arepreferably provided, one being placed at the top, one at the bottom andone centrally. The inner rear sides of the parts 3 are rabbeted out toreceive three longitudinal bars 5 forming the back or rear of the frame,substantially the same as the bars 4 except the top bar, which is setslightly below the upper edge of the frame. The corner posts 2 areconnected across the front of the frame by longitudinal frame bars 6placed at the top, bottom and center like the bars 4. These bars 6 areconnected at the center of the frame by two vertical bars 7 Across thebottom of the frame and supported at each end by the bottom end bars 4,I arrange a supporting board 8 which has a width slightly less than thedistance between the bottom frame bar 6 and the bottom rear bar 5. .Itis to be noted that a frame constructed as described, is not onlythoroughly braced and of great strength and extremely light, butprovides a number of open spaces in the front, ends and rear.

As is best illustrated in Figs. 1 and 2, the space between the innertank 10 and the outer shell is closed by the strips 2, 3, 4 and 6 aroundthe upper and lower edges of the structure. The air spaces providedbetween the shell 9 and the tank 10 are therefore d cad air spaces. 1thas been found that more damage is caused by the sweating of thesetanks, than by their leakage. Where atmospheric air has been permittedto come into con tact with the inner tank l0,the moisture in said aircondenses when it strikes upon the tank filled with cold water and thetank is caused to sweat This water runs down the outside of the tank andwhere the tank has been covered with an outer wooden shell, this shellis caused to warp and split. By providing the dead air spaces, thesweating of the tank is prevented.

To the front and ends of the frameavcrtical outer shell 9 of metal, issuitably secured. The metal shell gives the tank the appearance of beingconstructed ontirely of metal and may be enameled or coated for the.purpose of ornamentation. It will be observed that the frame has asubstantially rectangular interior. Within the frame the usual lining orreceptacle 10 is placed, so as to rest on the supporting board 8. Thelining fits snugly in the frame and is surrounded on all sides by theair spaces provided by the frame between the lining and the outer metalshell. The air spaces are non-conductors of heat and cold and should acold liquid be introduced into the lining, the outer shell will notsweat even though the temperature of the air about the outside of theshell is much higher than that of the liquid. The frame besidesaffording the heroin mentioned advantages, providcs eflicicnt means forattaching the fittings and the lining.

What I claim, is:

In a closet tank, the combination with a metallic tank, of a skeletonwooden frame which incloscs said tank and an outer metallic shell whichextends around the front and ends of the skeleton frame, said skeletonframe forming a closure for the space between the tank and the shellabout the upper and lower edges of said tank to thereby provide a deadair space between the outer shell and the tank to prevent sweating.

In testimony whereof I affix my signature in presence of two witnesses.

FRANK H. LINDENBERG.

Witnesses A. L. PHELPS, M. B. ScHLuY.

